JPH0922185A - Developing device, image forming device and process cartridge - Google Patents
Developing device, image forming device and process cartridgeInfo
- Publication number
- JPH0922185A JPH0922185A JP7196134A JP19613495A JPH0922185A JP H0922185 A JPH0922185 A JP H0922185A JP 7196134 A JP7196134 A JP 7196134A JP 19613495 A JP19613495 A JP 19613495A JP H0922185 A JPH0922185 A JP H0922185A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- developing
- carrier
- seal member
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Dry Development In Electrophotography (AREA)
- Electrophotography Configuration And Component (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、装置本体に着脱可能な
プロセスカートリッジ、及び記録媒体に画像を形成する
画像形成装置の現像装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process cartridge which can be attached to and detached from an apparatus main body, and a developing device of an image forming apparatus for forming an image on a recording medium.
【０００２】[0002]
【従来の技術】電子写真プロセスを用いたプリンタ等の
画像形成装置は、像担持体である感光体を一様に帯電さ
せ、該感光体への選択的な露光によって潜像を形成し、
該潜像を現像剤であるトナーで顕像化し、該トナー像を
記録媒体に転写し、更に、転写されたトナー像に熱や圧
力を加えることで該トナー像を記録媒体に定着させるこ
とで画像記録を行なう。2. Description of the Related Art An image forming apparatus such as a printer using an electrophotographic process uniformly charges a photoconductor, which is an image carrier, and forms a latent image by selectively exposing the photoconductor.
By visualizing the latent image with toner as a developer, transferring the toner image to a recording medium, and further applying heat or pressure to the transferred toner image to fix the toner image on the recording medium. Record images.
【０００３】このような装置は、トナーの補給や各種プ
ロセス手段のメンテナンスを伴うが、このトナー補給作
業やメンテナンスを容易とする手段として、前記感光
体、帯電手段、現像手段、クリーニング手段等を枠体内
にまとめてカートリッジ化したものも実用化されてい
る。Such an apparatus involves replenishment of toner and maintenance of various process means. As means for facilitating the toner replenishment work and maintenance, the photoconductor, charging means, developing means, cleaning means and the like are framed. Cartridges that have been put together in the body have also been put to practical use.
【０００４】このような装置における、潜像の顕像化を
行なう手段である現像装置として、現像手段枠体内に貯
蔵されたトナーを感光体へ供給する手段である現像剤担
持体と、該感光体へ供給されるトナー量を規制する現像
剤規制部材と、現像手段枠体外へのトナーの流出を防止
するためのシール手段としての長手シール部材及び端部
シール部材とを有するものが創案されている。In such a device, as a developing device which is a means for developing a latent image, a developer carrier which is a means for supplying the toner stored in the developing means frame to the photoconductor, and the photoconductor. A developer regulating member for regulating the amount of toner supplied to the body and a longitudinal sealing member and an end sealing member as sealing means for preventing the toner from flowing out of the developing device frame have been created. There is.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記従
来の現像装置には、次のような問題があった。However, the above-mentioned conventional developing device has the following problems.
【０００６】図６において、現像装置１４０の端部シー
ル部材１４５は、現像剤規制部材１４３両側の、現像剤
担持体１４２と現像手段枠体１４１との間に配置され
る。該端部シール部材１４５は一般にフェルト植毛材等
の可撓性の材質が用いられ、現像手段枠体１４１に固着
される。In FIG. 6, the end seal member 145 of the developing device 140 is disposed between the developer carrier 142 and the developing device frame 141 on both sides of the developer regulating member 143. The end seal member 145 is generally made of a flexible material such as felt flocked material and fixed to the developing means frame 141.
【０００７】ここで、端部シール部材１４５と現像手段
枠体１４１との密閉性を保つため、端部シール部材１４
５の長手シール部材１４４側の端面１４５ａは、現像手
段枠体１４１の長手シール部材貼り付け面となる長手リ
ブ１４１ａに突き当てられる。Here, in order to maintain the hermeticity between the end seal member 145 and the developing means frame body 141, the end seal member 14
5, the end surface 145a of the developing device frame 141 on the side of the longitudinal seal member 144 is abutted against the longitudinal rib 141a which is the surface of the developing device frame 141 to which the longitudinal seal member is attached.
【０００８】しかし、この端部シール部材の端面１４５
ａを現像手段枠体１４１の長手リブ１４１ａに突き当て
ることは、特に現像剤担持体１４２が小径の場合等、困
難であり、端部シール部材１４５の取付け作業には熟練
を要した。However, the end face 145 of this end seal member
It is difficult to bring a into contact with the longitudinal rib 141a of the developing means frame 141, especially when the developer carrying member 142 has a small diameter.
【０００９】従って、本発明の目的は、現像剤担持体の
端部シール部材と現像手段枠体との密閉性を確実に保持
でき、且つ、端部シール部材の組み立て性が良好な現像
装置、このような現像装置を備えた画像形成装置及びプ
ロセスカートリッジを提供することである。Therefore, an object of the present invention is to provide a developing device in which the end seal member of the developer carrying member and the developing means frame can be surely maintained in a hermetically sealed state, and the end seal member is easily assembled. An object of the present invention is to provide an image forming apparatus and a process cartridge provided with such a developing device.
【００１０】[0010]
【課題を解決するための手段】上記目的は本発明に係る
現像装置、画像形成装置及びプロセスカートリッジにて
達成される。要約すれば、本発明は、電子写真方式を用
いた画像形成装置における像担持体に作用する現像装置
であって、少なくとも、現像手段枠体と、現像剤を前記
像担持体へ供給する現像剤担持体と、前記現像剤担持体
により前記像担持体へ供給される現像剤の量を規制する
現像剤規制部材と、前記現像剤担持体の長手方向へのト
ナーの移動を規制する端部シール部材と、を有する現像
装置において、前記現像手段枠体の現像位置の前記現像
剤担持体の回転方向下流側の前記現像剤担持体端部付近
に、前記端部シール部材と同じ幅を有し前記端部シール
部材の端部が入り込む溝部を有することを特徴とする現
像装置である。The above object can be achieved by a developing device, an image forming apparatus and a process cartridge according to the present invention. In summary, the present invention relates to a developing device that acts on an image carrier in an image forming apparatus using an electrophotographic method, and is a developing device frame and at least a developer for supplying the developer to the image carrier. A carrier, a developer regulating member that regulates the amount of developer supplied to the image carrier by the developer carrier, and an end seal that regulates toner movement in the longitudinal direction of the developer carrier. And a member having the same width as the end seal member in the vicinity of the end portion of the developer carrying member on the downstream side in the rotation direction of the developer carrying member at the developing position of the developing means frame member. The developing device is characterized in that it has a groove portion into which an end portion of the end portion sealing member enters.
【００１１】前記溝部は、その向かい合う面のうち少な
くとも一方の面にリブ形状を有し、その内部に前記端部
シール部材の端部が入り込むことが好ましい。別の態様
によれば、前記溝部は、その向かい合う面に一対以上の
リブ形状を有し、その内部に前記端部シール部材の端部
が入り込むことが好ましい。It is preferable that the groove has a rib shape on at least one of the facing surfaces, and the end of the end seal member is inserted into the inside of the groove. According to another aspect, it is preferable that the groove has a pair of rib shapes on the surfaces facing each other, and the end of the end seal member is inserted into the groove.
【００１２】本発明による他の態様によれば、少なくと
も、現像手段枠体と、現像剤を像担持体へ供給する現像
剤担持体と、前記現像剤担持体により前記像担持体へ供
給される現像剤の量を規制する現像剤規制部材と、前記
現像剤担持体の長手方向へのトナーの移動を規制する端
部シール部材と、を有し、前記像担持体に作用するする
現像手段を備えた画像形成装置において、前記現像手段
の前記現像手段枠体は、現像位置の前記現像剤担持体の
回転方向下流側の前記現像剤担持体端部付近に、前記端
部シール部材と同じ幅を有し前記端部シール部材の端部
が入り込む溝部を有することを特徴とする画像形成装置
が提供される。According to another aspect of the present invention, at least a developing means frame, a developer carrier for supplying a developer to the image carrier, and a developer carrier for supplying the image carrier to the image carrier. A developing device that has a developer regulating member that regulates the amount of the developer and an end seal member that regulates the movement of the toner in the longitudinal direction of the developer carrier, and that acts on the image carrier. In the image forming apparatus, the developing means frame body of the developing means has the same width as the end seal member in the vicinity of an end portion of the developer carrying body at a developing position on the downstream side in the rotation direction of the developer carrying body. An image forming apparatus is provided which has a groove portion having a groove into which the end portion of the end seal member enters.
【００１３】又、本発明による他の態様によれば、像担
持体と、少なくとも前記像担持体に作用するプロセス手
段として現像手段とを有し、画像形成装置本体に装着自
在なプロセスカートリッジにおいて、前記現像手段は、
少なくとも、現像剤を前記像担持体へ供給する現像剤担
持体と、前記現像剤担持体により前記像担持体へ供給さ
れる現像剤の量を規制する現像剤規制部材と、前記現像
剤担持体の長手方向へのトナーの移動を規制する端部シ
ール部材とを有し、更に、現像位置の前記現像剤担持体
の回転方向下流側に現像手段枠体を備えており、該現像
手段枠体は、前記現像剤担持体端部付近に、前記端部シ
ール部材と同じ幅を有し前記端部シール部材の端部が入
り込む溝部を有することが好ましい。According to another aspect of the present invention, there is provided a process cartridge having an image carrier and at least a developing unit as a process unit acting on the image carrier, which is attachable to the main body of the image forming apparatus. The developing means is
At least a developer carrier for supplying a developer to the image carrier, a developer regulating member for regulating the amount of the developer supplied to the image carrier by the developer carrier, and the developer carrier. An end portion seal member for restricting the movement of toner in the longitudinal direction of the developing means, and further, a developing means frame body is provided on the downstream side in the rotation direction of the developer carrying body at the developing position. Preferably has a groove near the end of the developer carrying member, the groove having the same width as the end sealing member and into which the end of the end sealing member is inserted.
【００１４】[0014]
【実施例】以下、本発明に係る現像装置、画像形成装置
及びプロセスカートリッジを図面に則して更に詳しく説
明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A developing device, an image forming apparatus and a process cartridge according to the present invention will be described in more detail with reference to the drawings.
【００１５】実施例１ 先ず、本発明に係る画像形成装置の実施例１について、
図１〜図３に沿って説明する。First Embodiment First, the first embodiment of the image forming apparatus according to the present invention will be described.
A description will be given with reference to FIGS.
【００１６】図１における画像形成装置１は、プロセス
カートリッジ２を着脱自在に装着した電子写真プロセス
利用のレーザービームプリンタである。An image forming apparatus 1 shown in FIG. 1 is a laser beam printer using an electrophotographic process in which a process cartridge 2 is detachably mounted.
【００１７】プロセスカートリッジ２が画像形成装置本
体１に装着されたとき、プロセスカートリッジ２の上側
には露光装置の主要部をなすレーザースキャナユニット
３が配置され、プロセスカートリッジ２の下側には画像
形成対象となるシート材Ｐを収容したシートカセット４
が配置されている。更に、画像形成装置本体１には、シ
ート材Ｐの搬送方向に沿って、給紙ローラー５、転写ガ
イド６、転写用帯電ローラー７、搬送部材８、定着器
９、排紙ローラー１０、排紙トレイ１１等が配置されて
いる。When the process cartridge 2 is attached to the main body 1 of the image forming apparatus, the laser scanner unit 3 which is a main part of the exposure apparatus is arranged above the process cartridge 2 and the image forming apparatus is formed below the process cartridge 2. Sheet cassette 4 containing the target sheet material P
Is arranged. Further, in the image forming apparatus main body 1, a sheet feeding roller 5, a transfer guide 6, a transfer charging roller 7, a conveying member 8, a fixing device 9, a sheet discharging roller 10, a sheet discharging roller along the sheet material P conveying direction. The tray 11 and the like are arranged.
【００１８】プロセスカートリッジ２は、図２に示すよ
うに、カートリッジ枠体内に、像担持体としての回転自
在な感光体２０と、帯電手段３０と、現像装置４０と、
クリーニング装置５０との４種のプロセス手段を一体的
に収容している。As shown in FIG. 2, the process cartridge 2 includes a rotatable photosensitive body 20 as an image carrier, a charging means 30, a developing device 40 in a cartridge frame.
The cleaning device 50 and four types of process means are integrally housed.
【００１９】なお、プロセスカートリッジは、少なくと
も感光体２０と現像装置４０とを備えていればよい。The process cartridge may be provided with at least the photoconductor 20 and the developing device 40.
【００２０】次に、上記の如く構成された画像形成装置
による画像形成の概略について説明する。プリントスタ
ート信号に基づいて、感光体２０は矢印Ｋ１方向に所定
の周速度（プロセススピード）をもって回転駆動され
る。感光体２０の外周面にはバイアス電圧が印加された
帯電手段３０が接触していて、この帯電手段３０によっ
て感光体２０の外周面は、一様均一に帯電される。Next, an outline of image formation by the image forming apparatus configured as described above will be described. Based on the print start signal, the photoconductor 20 is rotationally driven in the arrow K1 direction at a predetermined peripheral speed (process speed). A charging unit 30 to which a bias voltage is applied is in contact with the outer peripheral surface of the photoconductor 20, and the outer peripheral surface of the photoconductor 20 is uniformly charged by the charging unit 30.
【００２１】レーザースキャナユニット３からは、目的
画像情報の時系列的電気デジタル画素信号に対応して変
調されたレーザ光Ｌが出力され、カートリッジ本体の上
面の露光窓部５３からカートリッジ本体内に入光して感
光体２０の帯電面を走査露光する。これにより、感光体
２０の外周面には目的画像情報に対応した静電潜像が形
成されていく。この静電潜像は、現像装置４０の現像剤
規制部材４３によって層厚規制されて現像剤担持体４２
上に塗布された現像剤（トナー）Ｔによって現像され
る。The laser scanner unit 3 outputs laser light L modulated in accordance with the time-series electric digital pixel signals of the target image information, and enters the cartridge body through the exposure window 53 on the upper surface of the cartridge body. Light is emitted to scan and expose the charged surface of the photoconductor 20. As a result, an electrostatic latent image corresponding to the target image information is formed on the outer peripheral surface of the photoconductor 20. This electrostatic latent image has its layer thickness regulated by the developer regulating member 43 of the developing device 40, and the developer carrying member 42.
It is developed by the developer (toner) T applied on top.
【００２２】一方、レーザの出力するタイミングとあわ
せて給紙ローラ５によってシート材Ｐがシートカセット
４から１枚宛給紙されて、転写ガイド６を経由して、感
光体２０と転写用帯電ローラ７との転移位置へタイミン
グ供給される。これにより感光体２０側のトナー像がシ
ート材Ｐに順次転写されていく。On the other hand, one sheet of material P is fed from the sheet cassette 4 by the sheet feeding roller 5 at the same timing as the output of the laser, passes through the transfer guide 6, and the photoconductor 20 and the transfer charging roller. Timing is supplied to the transition position with 7. As a result, the toner images on the photoconductor 20 side are sequentially transferred to the sheet material P.
【００２３】トナー像が転写されたシート材Ｐは、感光
体２０から分離されて搬送部材８によって定着器９に搬
送され、定着ローラー９ａと加圧ローラー９ｂとのニッ
プ部を通ることでトナー像の定着処理を受け、排紙ロー
ラー１０により、排紙トレイ１１に排紙される。転写後
の感光体２０は、クリーニング装置５０のクリーニング
ブレード５２により外周面上の残留トナーが除去され
て、再び、帯電から始まる作像に供される。The sheet material P on which the toner image is transferred is separated from the photoconductor 20 and is conveyed to the fixing device 9 by the conveying member 8 and passes through the nip portion between the fixing roller 9a and the pressure roller 9b to form the toner image. Then, the sheet is discharged to the sheet discharge tray 11 by the sheet discharge roller 10. The residual toner on the outer peripheral surface of the photoconductor 20 after the transfer is removed by the cleaning blade 52 of the cleaning device 50, and the photoconductor 20 is again subjected to image formation starting from charging.
【００２４】次に、現像装置４０の構成について図３に
沿って説明する。Next, the structure of the developing device 40 will be described with reference to FIG.
【００２５】本実施例において、現像装置４０は、現像
手段枠体４１、現像手段枠体４１にその両端を回転可能
に支持される現像剤担持体である現像スリーブ４２、現
像手段枠体４１に支持され、現像スリーブ４２に担持さ
れたトナーの層厚を規制する現像剤規制部材４３、現像
スリーブ４２の現像位置からみて、現像スリーブ４２の
回転方向下流側からのトナーの流出を防止するフィルム
状の長手シール部材４４、及び現像スリーブ４２の端部
からのトナーの流出を防止する端部シール部材４５で構
成される。In the present embodiment, the developing device 40 includes a developing means frame 41, a developing sleeve 42 which is a developer carrying member rotatably supported at both ends of the developing means frame 41, and a developing means frame 41. A developer regulating member 43 that regulates the layer thickness of the toner supported and carried on the developing sleeve 42, and a film shape that prevents the toner from flowing out from the downstream side in the rotation direction of the developing sleeve 42 when viewed from the developing position of the developing sleeve 42. The longitudinal seal member 44 and the end seal member 45 that prevents the toner from flowing out from the end of the developing sleeve 42.
【００２６】現像手段枠体４１は、トナー収容部を構成
すると共に、トナー収容部内のトナーＴを現像スリーブ
４２に供給するための開口部４１ｃを備えている。開口
部４１ｃは、感光体２０側に位置し現像スリーブ４２の
軸線に沿って平行に延びる長手リブ４１ａと、トナー収
容部側に位置し長手リブ４１ａに対して平行なトナー収
容部側枠体４１ｄと、現像スリーブ４２の両端部に位置
し、長手リブ４１ａ及びトナー収容部枠体４１ｄを連結
する、湾曲した端部連結部４１ｅ、４１ｅとにより画成
されている。The developing means frame 41 constitutes a toner accommodating portion and has an opening 41c for supplying the toner T in the toner accommodating portion to the developing sleeve 42. The opening 41c is located on the side of the photoconductor 20 and extends in parallel with the axial line of the developing sleeve 42, and the frame 41d on the side of the toner containing section is parallel to the long rib 41a. And curved end connecting portions 41e, 41e located at both ends of the developing sleeve 42 and connecting the longitudinal rib 41a and the toner containing portion frame 41d.
【００２７】また、現像剤規制部材４３は、現像スリー
ブ４２の開口部４１ｃ側斜め上部に一端が当接するよう
にトナー収容部側枠体４１ｄに沿って延びている。Further, the developer regulating member 43 extends along the toner accommodating portion side frame body 41d so that one end of the developer regulating member 43 abuts on an obliquely upper portion of the developing sleeve 42 on the opening portion 41c side.
【００２８】さらに、長手シール部材４４は、現像スリ
ーブ４２の下部に一端が当接するように現像スリーブ４
２の長手方向に沿って延び、長手リブ４１ａの上面にそ
の感光体２０側部分を支持されている。Further, the longitudinal seal member 44 has one end abutting against the lower portion of the developing sleeve 42.
2 extends along the longitudinal direction of 2, and the photosensitive member 20 side portion thereof is supported on the upper surface of the longitudinal rib 41a.
【００２９】また、端部連結部４１ｅの開口部４１ｃ側
には、端部シール部材４５を支持するための支持部４１
ｅ1 が設けられており、この支持部４１ｅ1 に連続する
ように、端部シール部材４５の端部４５ａを受容するた
めのシール溝４１ｂが長手リブ４１ａに形成されてい
る。シール溝４１ｂは端部シール部材４５の幅と同じ幅
を有し、端部シール部材４５の端部４５ａが差込まれる
構成とされている。A support portion 41 for supporting the end seal member 45 is provided on the opening 41c side of the end connection portion 41e.
e 1 is provided, and a seal groove 41 b for receiving the end 45 a of the end seal member 45 is formed in the longitudinal rib 41 a so as to be continuous with the support portion 41 e 1 . The seal groove 41b has the same width as the width of the end seal member 45, and the end portion 45a of the end seal member 45 is inserted.
【００３０】シール溝４１ｂの２つの対向する面は、端
部シール部材４５の長手リブ４１ａ側の端部４５ａ付近
の側面とそれぞれ接触することにより、トナーの流出を
防止している。The two opposing surfaces of the seal groove 41b are in contact with the side surfaces near the end 45a of the end seal member 45 on the side of the longitudinal rib 41a to prevent the toner from flowing out.
【００３１】以上のような構成とすることによって、現
像スリーブの端部シール部材と現像手段枠体との密閉性
を確実に保持でき、且つ、端部シール部材の現像手段枠
体への取付けを容易にすることができる。With the above-mentioned structure, the sealing property between the end seal member of the developing sleeve and the developing means frame can be reliably maintained, and the end seal member can be attached to the developing means frame. Can be easy.
【００３２】実施例２ 次に、本発明に係る現像装置の実施例２について、図４
に沿って説明する。Second Embodiment Next, a second embodiment of the developing device according to the present invention will be described with reference to FIG.
It is explained along.
【００３３】実施例２において実施例１同様に、現像装
置４０は現像手段枠体４２、現像規制部材４３、前記現
像剤担持体４２の現像位置からみて下流側からのトナー
流出を防止するフィルム状の長手シール部材４４、現像
剤担持体４２の端部方向からのトナーの流出を防止する
端部シール部材４５とで構成される。In the second embodiment, as in the first embodiment, the developing device 40 is a film-like member for preventing the toner from flowing out from the downstream side when viewed from the developing position of the developing means frame 42, the development regulating member 43, and the developer carrying member 42. The longitudinal seal member 44 and the end seal member 45 for preventing the toner from flowing out from the direction of the end of the developer carrying member 42.
【００３４】本実施例においては、実施例１と同様に、
現像手段枠体４３の長手リブ４１ａは、端部シール部材
４５の端部４５ａが入り込むシール溝４１ｂを備えてい
るが、本実施例においては、シール溝４１ｂの幅が端部
シール部材４５の幅より大きく設定されていると共に、
シール溝４１ｂの対向する面のうち、一方の面に、本実
施例の場合外側の面に少なくとも２本のリブ４６が設け
られ、該リブ４６と対向する面との間の寸法が端部シー
ル部材４５の幅と同寸法となる形状を有する。In this embodiment, as in the first embodiment,
The longitudinal rib 41a of the developing means frame 43 is provided with a seal groove 41b into which the end 45a of the end seal member 45 is inserted. In the present embodiment, the width of the seal groove 41b is the width of the end seal member 45. It is set larger,
In the present embodiment, at least two ribs 46 are provided on one of the facing surfaces of the seal groove 41b on the outer surface, and the dimension between the rib 46 and the facing surface is the end seal. It has a shape having the same size as the width of the member 45.
【００３５】本実施例においても、端部シール部材４５
の長手リブ４１ａ側の端部４５ａがシール溝４１ｂに差
込まれる構成となっており、シール溝４１ｂの一方の面
に設けられたリブ４６とリブ４６と対向する面とは、端
部シール部材４５の長手リブ４１ａ側の端部４５ａ付近
の側面とそれぞれ接触し、この接触面でトナーの流出を
防止している。Also in this embodiment, the end seal member 45 is provided.
The end portion 45a on the side of the long rib 41a is inserted into the seal groove 41b, and the rib 46 provided on one surface of the seal groove 41b and the surface facing the rib 46 are end seal members. The side surfaces of the long ribs 45 near the end portion 45a on the side of the long rib 41a are in contact with each other, and the contact surface prevents the toner from flowing out.
【００３６】本実施例においても、実施例１と同様の効
果を得ることができる。Also in this embodiment, the same effect as that of the first embodiment can be obtained.
【００３７】実施例３ 次に、本発明に係る現像装置の実施例３について、図５
に沿って説明する。Third Embodiment Next, a third embodiment of the developing device according to the present invention will be described with reference to FIG.
It is explained along.
【００３８】実施例３においても、実施例１、２同様に
現像装置４０は、現像手段枠体４１、現像剤担持体４
２、現像剤規制部材４３、現像剤担持体４２の現像位置
からみて下流側からのトナーの流出を防止するフィルム
状の長手シール部材４４、現像剤担持体４２の端部方向
からのトナーの流出を防止する端部シール部材４５とで
構成する。Also in the third embodiment, the developing device 40 includes the developing means frame 41 and the developer carrying member 4 as in the first and second embodiments.
2, a developer regulating member 43, a film-shaped longitudinal seal member 44 for preventing the toner from flowing out from the downstream side when viewed from the developing position of the developer carrying member 42, and the toner flowing out from the end direction of the developer carrying member 42. And an end seal member 45 for preventing the above.
【００３９】本実施例においては、現像手段枠体４３の
長手リブ４１ａは、端部シール部材４５の端部４５ａが
入り込むシール溝４１ｂを備えているが、本実施例にお
いては、シール溝４１ｂの対向する面の両方の面に、そ
れぞれ２本のリブ４６が設けられ、対向するリブ４６間
の寸法が端部シール部材４５の幅と同寸法となる形状を
有する。In this embodiment, the longitudinal rib 41a of the developing means frame 43 is provided with the seal groove 41b into which the end portion 45a of the end seal member 45 is inserted, but in this embodiment, the seal groove 41b is formed. Two ribs 46 are provided on each of the opposing surfaces, and the dimension between the opposing ribs 46 is the same as the width of the end seal member 45.
【００４０】本実施例においても、端部シール部材４５
の長手リブ４１ａ側の端部がシール溝４１ｂに差込まれ
る構成となっており、シール溝４１ｂの対向する面に設
けられたリブ４６は、共に、端部シール部材４５の長手
リブ４１ａ側の端部４５ａ付近の側面と接触し、この接
触面でトナーの流出を防止している。Also in this embodiment, the end seal member 45 is used.
The end portions of the end ribs 41a on the side of the long ribs 41a of the end seal member 45 are arranged on the opposite sides of the seal groove 41b. It contacts the side surface near the end portion 45a, and the contact surface prevents the toner from flowing out.
【００４１】本実施例においても、実施例１と同様の効
果を得ることができた。Also in this example, the same effect as in Example 1 could be obtained.
【００４２】[0042]
【発明の効果】以上の説明から明らかなように、本発明
によれば、現像装置が、現像手段枠体の現像位置の現像
剤担持体の回転方向下流側の前記現像剤担持体端部付近
に、端部シール部材と同じ幅を有し前記端部シール部材
の端部が入り込む溝部を有することにより、現像剤担持
体の端部シール部材と現像手段枠体との密閉性を確実に
保持でき、且つ、良好な端部シール部材の組み立て性を
得ることができる。従って、現像剤の飛散を防止でき、
よって現像手段回りの汚染を防止でき、また、現像剤の
有効利用を達成でき、よって経済効率の良い現像手段、
画像形成装置及びプロセスカートリッジを提供すること
ができる。As is apparent from the above description, according to the present invention, the developing device is provided in the vicinity of the end portion of the developer carrier on the downstream side in the rotation direction of the developer carrier at the developing position of the developing means frame. Has a groove portion having the same width as that of the end seal member and into which the end portion of the end seal member is inserted, so that the hermeticity between the end seal member of the developer carrying member and the developing means frame is reliably maintained. It is possible to obtain good assemblability of the end seal member. Therefore, the scattering of the developer can be prevented,
Therefore, the contamination around the developing means can be prevented, and the effective use of the developer can be achieved. Therefore, the economically efficient developing means,
An image forming apparatus and a process cartridge can be provided.
【図１】本発明が実施される画像形成装置の一例を示す
断面図である。FIG. 1 is a sectional view showing an example of an image forming apparatus in which the present invention is implemented.
【図２】本発明が実施されるプロセスカートリッジの一
例を示す断面図である。FIG. 2 is a cross-sectional view showing an example of a process cartridge in which the present invention is implemented.
【図３】実施例１の現像装置を示す一部切欠き斜視図で
ある。FIG. 3 is a partially cutaway perspective view showing the developing device according to the first embodiment.
【図４】実施例２の現像装置を示す一部切欠き斜視図で
ある。FIG. 4 is a partially cutaway perspective view showing a developing device according to a second embodiment.
【図５】実施例３の現像装置を示す一部切欠き斜視図で
ある。FIG. 5 is a partially cutaway perspective view showing a developing device according to a third embodiment.
【図６】従来の現像装置の一例を示す構成図である。FIG. 6 is a configuration diagram showing an example of a conventional developing device.
１ 画像形成装置 ２ プロセスカートリッジ ２０ 感光体（像担持体） ４０ 現像装置 ４１ 現像手段枠体 ４１ｂ 溝部 ４２ 現像スリーブ（現像剤担持体） ４３ 現像剤規制部材 ４５ 端部シール部材 ４５ａ 端部シール部材の端部 ４６ リブ DESCRIPTION OF SYMBOLS 1 Image forming apparatus 2 Process cartridge 20 Photoconductor (image carrier) 40 Developing device 41 Developing means frame 41b Groove 42 Developing sleeve (developer carrying body) 43 Developer regulating member 45 End seal member 45a End seal member Edge 46 rib
Claims (9)
ける像担持体に作用する現像装置であって、少なくと
も、現像手段枠体と、現像剤を前記像担持体へ供給する
現像剤担持体と、前記現像剤担持体により前記像担持体
へ供給される現像剤の量を規制する現像剤規制部材と、
前記現像剤担持体の長手方向へのトナーの移動を規制す
る端部シール部材と、を有する現像装置において、 前記現像手段枠体の現像位置の前記現像剤担持体の回転
方向下流側の前記現像剤担持体端部付近に、前記端部シ
ール部材と同じ幅を有し前記端部シール部材の端部が入
り込む溝部を有することを特徴とする現像装置。1. A developing device acting on an image carrier in an image forming apparatus using an electrophotographic system, comprising at least a developing means frame and a developer carrier for supplying a developer to the image carrier. A developer regulating member for regulating the amount of developer supplied to the image carrier by the developer carrier,
A developing device having an end seal member that regulates the movement of toner in the longitudinal direction of the developer carrier, wherein the developing device is located downstream of the developing position of the developing means frame in the rotational direction of the developer carrier. A developing device having a groove near the edge of the agent carrier, the groove having the same width as the edge seal member and into which the edge of the edge seal member is inserted.
なくとも一方の面にリブ形状を有し、その内部に前記端
部シール部材の端部が入り込むことを特徴とする請求項
１の現像装置。2. The developing device according to claim 1, wherein the groove portion has a rib shape on at least one of the surfaces facing each other, and the end portion of the end portion sealing member is inserted into the inside thereof.
上のリブ形状を有し、その内部に前記端部シール部材の
端部が入り込むことを特徴とする請求項１の現像装置。3. The developing device according to claim 1, wherein the groove portion has a pair of rib shapes on the surfaces facing each other, and the end portion of the end seal member is inserted therein.
像担持体へ供給する現像剤担持体と、前記現像剤担持体
により前記像担持体へ供給される現像剤の量を規制する
現像剤規制部材と、前記現像剤担持体の長手方向へのト
ナーの移動を規制する端部シール部材と、を有し、前記
像担持体に作用する現像手段を備えた画像形成装置にお
いて、 前記現像手段の前記現像手段枠体は、現像位置の前記現
像剤担持体の回転方向下流側の前記現像剤担持体端部付
近に、前記端部シール部材と同じ幅を有し前記端部シー
ル部材の端部が入り込む溝部を有することを特徴とする
画像形成装置。4. At least a developing means frame, a developer carrier for supplying a developer to an image carrier, and a developing device for regulating the amount of the developer supplied to the image carrier by the developer carrier. An image forming apparatus comprising: a developer regulating member; and an end seal member that regulates movement of toner in the longitudinal direction of the developer carrying member, the developing device comprising a developing unit that acts on the image carrying member. The developing means frame of the means has the same width as the end sealing member near the end of the developer carrying body on the downstream side in the rotation direction of the developer carrying body at the developing position, and An image forming apparatus having a groove portion into which an end portion is inserted.
なくとも一方の面にリブ形状を有し、その内部に前記端
部シール部材の端部が入り込むことを特徴とする請求項
４の画像形成装置。5. The image forming apparatus according to claim 4, wherein the groove has a rib shape on at least one of the facing surfaces, and the end of the end seal member is inserted into the inside of the groove. .
上のリブ形状を有し、その内部に前記端部シール部材の
端部が入り込むことを特徴とする請求項４の画像形成装
置。6. The image forming apparatus according to claim 4, wherein the groove has a pair of rib shapes on the surfaces facing each other, and the end of the end seal member is inserted into the inside of the groove.
作用するプロセス手段としての現像手段とを有し、画像
形成装置本体に装着自在なプロセスカートリッジにおい
て、 前記現像手段は、少なくとも、現像手段枠体と、現像剤
を前記像担持体へ供給する現像剤担持体と、前記現像剤
担持体により前記像担持体へ供給される現像剤の量を規
制する現像剤規制部材と、前記現像剤担持体の長手方向
へのトナーの移動を規制する端部シール部材とを有し、
更に、前記現像手段枠体の現像位置の前記現像剤担持体
の回転方向下流側の前記現像剤担持体端部付近に、前記
端部シール部材と同じ幅を有し前記端部シール部材の端
部が入り込む溝部を有することを特徴とするプロセスカ
ートリッジ。7. A process cartridge having an image carrier and at least a developing unit as a process unit acting on the image carrier, which is attachable to an image forming apparatus main body, wherein the developing unit is at least a developing unit. A frame, a developer carrier for supplying a developer to the image carrier, a developer restricting member for restricting the amount of the developer supplied to the image carrier by the developer carrier, and the developer And an end seal member that regulates the movement of the toner in the longitudinal direction of the carrier,
Furthermore, the end of the end seal member has the same width as the end seal member near the end of the developer carrier on the downstream side of the developing position of the developing means frame in the rotation direction of the developer carrier. A process cartridge having a groove portion into which a portion is inserted.
なくとも一方の面にリブ形状を有し、その内部に前記端
部シール部材の端部が入り込むことを特徴とする請求項
７のプロセスカートリッジ。8. The process cartridge according to claim 7, wherein the groove has a rib shape on at least one of the surfaces facing each other, and the end of the end seal member is inserted into the inside of the groove.
上のリブ形状を有し、その内部に前記端部シール部材の
端部が入り込むことを特徴とする請求項７のプロセスカ
ートリッジ。9. The process cartridge according to claim 7, wherein the groove portion has a pair of rib shapes on the surfaces facing each other, and the end portion of the end seal member is inserted therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7196134A JPH0922185A (en) | 1995-07-07 | 1995-07-07 | Developing device, image forming device and process cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7196134A JPH0922185A (en) | 1995-07-07 | 1995-07-07 | Developing device, image forming device and process cartridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0922185A true JPH0922185A (en) | 1997-01-21 |
Family
ID=16352811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7196134A Pending JPH0922185A (en) | 1995-07-07 | 1995-07-07 | Developing device, image forming device and process cartridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0922185A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8521055B2 (en) | 2010-09-30 | 2013-08-27 | Brother Kogyo Kabushiki Kaisha | Developing device provided with thickness-regulation member resistant to abrasion |
| US8620176B2 (en) | 2010-04-15 | 2013-12-31 | Brother Kogyo Kabushiki Kaisha | Casing projections of an image forming apparatus configured to support a seal of a developing device |
| JP2015011234A (en) * | 2013-06-28 | 2015-01-19 | ブラザー工業株式会社 | Development device |
| US8948648B2 (en) | 2010-09-30 | 2015-02-03 | Brother Kogyo Kabushiki Kaisha | Developing device provided with sealing members assembled to thickness-regulation member |
-
1995
- 1995-07-07 JP JP7196134A patent/JPH0922185A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8620176B2 (en) | 2010-04-15 | 2013-12-31 | Brother Kogyo Kabushiki Kaisha | Casing projections of an image forming apparatus configured to support a seal of a developing device |
| US8849154B2 (en) | 2010-04-15 | 2014-09-30 | Brother Kogyo Kabushiki Kaisha | Casing projections of an image forming apparatus configured to support a seal of a developing device |
| US8521055B2 (en) | 2010-09-30 | 2013-08-27 | Brother Kogyo Kabushiki Kaisha | Developing device provided with thickness-regulation member resistant to abrasion |
| US8948648B2 (en) | 2010-09-30 | 2015-02-03 | Brother Kogyo Kabushiki Kaisha | Developing device provided with sealing members assembled to thickness-regulation member |
| JP2015011234A (en) * | 2013-06-28 | 2015-01-19 | ブラザー工業株式会社 | Development device |
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